Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon
Abstract MacKenzie, K. M., Trueman, C. N., Palmer, M. R., Moore, A., Ibbotson, A. T., Beaumont, W. R. C., and Davidson, I. C. 2012. Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon from the UK. – ICES Journal of Marine Sc...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fss074 http://academic.oup.com/icesjms/article-pdf/69/9/1637/29143974/fss074.pdf |
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croxfordunivpr:10.1093/icesjms/fss074 2024-09-09T19:53:49+00:00 Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon MacKenzie, Kirsteen M. Trueman, Clive N. Palmer, Martin R. Moore, Andy Ibbotson, Anton T. Beaumont, William R. C. Davidson, Ian C. 2012 http://dx.doi.org/10.1093/icesjms/fss074 http://academic.oup.com/icesjms/article-pdf/69/9/1637/29143974/fss074.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 69, issue 9, page 1637-1645 ISSN 1095-9289 1054-3139 journal-article 2012 croxfordunivpr https://doi.org/10.1093/icesjms/fss074 2024-08-05T04:32:32Z Abstract MacKenzie, K. M., Trueman, C. N., Palmer, M. R., Moore, A., Ibbotson, A. T., Beaumont, W. R. C., and Davidson, I. C. 2012. Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon from the UK. – ICES Journal of Marine Science, 69: 1637–1645. Locating and differentiating the marine feeding areas used by adult salmon (Salmo salar) is essential to stock-based management and conservation, but traditional tagging studies are limited and influenced by the uneven distribution of the fisheries or research vessel surveys. Here, a novel approach is used, based on the observation that the isotopic composition of animal tissues is intrinsically linked to the environmental conditions during tissue growth, which allows for the distinction of pelagic fish feeding in different locations. This isotopic approach is applied using archived collections of salmon scales and shows that (i) salmon act as size-structured pelagic predators, (ii) adult salmon from different natal origins within the UK (and hence components of the southern European stock complex) feed in different oceanic regions before their return, (iii) one-sea-winter (1SW) and multi-sea-winter salmon returning to some rivers in the UK are separated in their marine feeding areas, whereas those from others are not, and (iv) salmon from the rivers sampled are not feeding in regions of the Northwest Atlantic used by 1SW salmon returning to rivers in Newfoundland. Therefore, the stable isotope approach allows for retrospective investigations of marine diet, location, and migration at stock- and cohort-specific levels. Article in Journal/Newspaper Newfoundland Northwest Atlantic Salmo salar Oxford University Press Davidson ENVELOPE(-44.766,-44.766,-60.766,-60.766) ICES Journal of Marine Science 69 9 1637 1645 |
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Oxford University Press |
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croxfordunivpr |
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English |
description |
Abstract MacKenzie, K. M., Trueman, C. N., Palmer, M. R., Moore, A., Ibbotson, A. T., Beaumont, W. R. C., and Davidson, I. C. 2012. Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon from the UK. – ICES Journal of Marine Science, 69: 1637–1645. Locating and differentiating the marine feeding areas used by adult salmon (Salmo salar) is essential to stock-based management and conservation, but traditional tagging studies are limited and influenced by the uneven distribution of the fisheries or research vessel surveys. Here, a novel approach is used, based on the observation that the isotopic composition of animal tissues is intrinsically linked to the environmental conditions during tissue growth, which allows for the distinction of pelagic fish feeding in different locations. This isotopic approach is applied using archived collections of salmon scales and shows that (i) salmon act as size-structured pelagic predators, (ii) adult salmon from different natal origins within the UK (and hence components of the southern European stock complex) feed in different oceanic regions before their return, (iii) one-sea-winter (1SW) and multi-sea-winter salmon returning to some rivers in the UK are separated in their marine feeding areas, whereas those from others are not, and (iv) salmon from the rivers sampled are not feeding in regions of the Northwest Atlantic used by 1SW salmon returning to rivers in Newfoundland. Therefore, the stable isotope approach allows for retrospective investigations of marine diet, location, and migration at stock- and cohort-specific levels. |
format |
Article in Journal/Newspaper |
author |
MacKenzie, Kirsteen M. Trueman, Clive N. Palmer, Martin R. Moore, Andy Ibbotson, Anton T. Beaumont, William R. C. Davidson, Ian C. |
spellingShingle |
MacKenzie, Kirsteen M. Trueman, Clive N. Palmer, Martin R. Moore, Andy Ibbotson, Anton T. Beaumont, William R. C. Davidson, Ian C. Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
author_facet |
MacKenzie, Kirsteen M. Trueman, Clive N. Palmer, Martin R. Moore, Andy Ibbotson, Anton T. Beaumont, William R. C. Davidson, Ian C. |
author_sort |
MacKenzie, Kirsteen M. |
title |
Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
title_short |
Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
title_full |
Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
title_fullStr |
Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
title_full_unstemmed |
Stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
title_sort |
stable isotopes reveal age-dependent trophic level and spatial segregation during adult marine feeding in populations of salmon |
publisher |
Oxford University Press (OUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1093/icesjms/fss074 http://academic.oup.com/icesjms/article-pdf/69/9/1637/29143974/fss074.pdf |
long_lat |
ENVELOPE(-44.766,-44.766,-60.766,-60.766) |
geographic |
Davidson |
geographic_facet |
Davidson |
genre |
Newfoundland Northwest Atlantic Salmo salar |
genre_facet |
Newfoundland Northwest Atlantic Salmo salar |
op_source |
ICES Journal of Marine Science volume 69, issue 9, page 1637-1645 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fss074 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
9 |
container_start_page |
1637 |
op_container_end_page |
1645 |
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1809923271195361280 |